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← Nature & AnimalsWhich consequence results when a mature tree experiences prolonged drought-induced cavitation?
A)Increased carbohydrate translocation to phloem
B)Accelerated leaf abscission and senescence✓
C)Enhanced root pressure drives xylem flow
D)Decreased stomatal conductance for gas exchange
💡 Explanation
Water column breakage occurs in the xylem because drought diminishes water availability resulting in tension increase inducing cavitation, which interrupts water and mineral transport throughout the tree; therefore, accelerated leaf abscission occurs, rather than maintain functional leaves under stress while losing water.
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